How Can a GRE Tutoring Service Help Students Prepare Better for Test Day?

I planned to prepare for the GRE during my semester break, but university assignments and project work took most of my free time. Now the exam date is getting closer, and I still have trouble with some topics and managing time during practice. I have been considering a GRE tutoring service, but I want to hear real student experiences before choosing one. Has anyone worked with a tutor who explained difficult concepts clearly, provided useful practice, and gave helpful feedback? I would appreciate honest advice from students who found tutoring useful during their GRE preparation.